Harken 57mm Carbo Ratchamatic Single, Becket

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Equipping your mainsheet system with Harken's Carbo Ratchamatic is akin to having a Tiptronic transmission on your car. This load-sensing ratchet block rolls freely in both directions under low loads, and automatically engages the ratchet when the load increases. It's great for mainsheet and asymmetric spinnaker sheet trim. A simple adjustment with an hex key can customize the Ratchamatic to differ trimmers' strength.